4.7 Article

Effect of heat treatment on microstructure evolution and erosion-corrosion behavior of a nickel-aluminum bronze alloy in chloride solution

Journal

CORROSION SCIENCE
Volume 98, Issue -, Pages 260-270

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.05.037

Keywords

Alloy; Aluminum; Copper; Erosion; SEM; Weight-loss

Funding

  1. Canada Research Chairs Program
  2. Major State Basic Research Development Program of China (973 Program) [2014CB046701]
  3. National High Technology Research and Development Program of China (863 Program) [2013AA031604]
  4. China Postdoctoral Science Foundation [2014M551410]

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In this work, the effect of heat treatment on microstructure and mechanical properties, as well as corrosion and erosion-corrosion behavior of a nickel-aluminum bronze (NAB) alloy in sodium chloride solution was studied. The heat treatment affects remarkably the microstructure of the NAB alloy and its mechanical properties. The strength and hardness increase with the increasing content of hard phases in the alloy. There is no obvious effect of the microstructure on electrochemical corrosion behavior of the alloy under various heat treatments. However, its erosion-corrosion resistance can be improved by generation of hard phases such as beta' and k phases by heat treatments. (C) 2015 Elsevier Ltd. All rights reserved.

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